Step 1: Open your preferred web browser and type the website URL accompanied by ‘wp-login.php’ at the end of the site URL.
Option #1: yourdomain.com/wp-login.php
Step 2: Enter the username and password and press the ‘Login‘ button. If the login is successful you will see the WordPress dashboard of your website.
Additional Information
In most cases, you should be able to access the WordPress dashboard by adding ‘admin‘ or ‘login‘ to the end of the URL. For example, both, ‘yourdomain.com/admin‘ and ‘yourdomain.com/login‘ will redirect to the ‘yourdomain.com/wp-login.php’ page.
This is not applicable to all websites as there are plugins and themes that may have altered this default behaviour.
You could also access the site dashboard, by adding ‘wp-admin‘ or ‘wp-admin.php‘ which will then redirect you to the ‘wp-login.php‘ for account authentication.